Patent · US Active

Determining a harmonicity measure for voice processing

US9520144B2 · kind B2 · utility

1Cited by

6References

20Claims

0Family size

Assignee

Dolby Laboratories Licensing Corporation · US

Inventors

David Gunawan · Sydney, AU
Glenn N. Dickins · Sydney, AU

Key dates

Filing date	Mar 21, 2013
Grant date	Dec 13, 2016
Priority date	—
Expiry date	Apr 14, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG10L2025/937
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A method, an apparatus, and a computer-readable medium configured with instructions that when executed carry out the method for determining a measure of harmonicity. In one embodiment the method includes selecting candidate fundamental frequencies within a range, and for candidate determining a mask or retrieving a pre-calculated mask that has positive value for each frequency that contributed to harmonicity, and negative value for each frequency that contributes to inharmonicity. A candidate harmonicity measure is calculated for each candidate fundamental by summing the product of the mask and the magnitude measure spectrum. The harmonicity measure is selected as the maximum of the candidate harmonicity measures.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.